CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (USD $) In Millions, except Share data in Thousands		Total	Common Stock		Additional Paid-in Capital	Earnings Reinvested	Accumulated Other Comprehensive Loss	PPL Electric Utilities Corp [Member]		PPL Electric Utilities Corp [Member] Common Stock		PPL Electric Utilities Corp [Member] Additional Paid-in Capital	PPL Electric Utilities Corp [Member] Earnings Reinvested	LG And E And KU Energy LLC [Member]		LG And E And KU Energy LLC [Member] Members Equity [Member]	Louisville Gas And Electric Co [Member]		Louisville Gas And Electric Co [Member] Common Stock		Louisville Gas And Electric Co [Member] Additional Paid-in Capital	Louisville Gas And Electric Co [Member] Earnings Reinvested	Kentucky Utilities Co [Member]		Kentucky Utilities Co [Member] Common Stock		Kentucky Utilities Co [Member] Additional Paid-in Capital	Kentucky Utilities Co [Member] Earnings Reinvested	Kentucky Utilities Co [Member] Accumulated Other Comprehensive Loss
Balance at beginning of period at Dec. 31, 2013		$ 12,466	$ 6		$ 8,316	$ 5,709	$ (1,565)	$ 2,349		$ 364		$ 1,340	$ 645				$ 1,960		$ 424		$ 1,364	$ 172	$ 3,044		$ 308		$ 2,505	$ 230	$ 1
Balance at beginning of period at Dec. 31, 2013																4,150
Balance at beginning of period - shares at Dec. 31, 2013			630,321	[1]						66,368	[2]								21,294	[3]					37,818	[4]
Common stock shares issued	[1]		1,096
Common stock issued		30			30
Stock-based compensation		6			6
Net income (loss)		316				316		85	[5]				85	115	[5]		52	[6]				52	77	[5]				77
Dividends, dividend equivalents and distributions		(237)				(237)
Cash dividends declared on common stock								(32)					(32)				(27)					(27)	(37)					(37)
Distributions to member																(104)
Contributions from member																40
Capital Contributions From Parent								65				65											40				40
Other comprehensive income (loss)		136					136									(1)							(1)						(1)
Balance at end of period at Mar. 31, 2014		12,717	6		8,352	5,788	(1,429)	2,467		364		1,405	698				1,985		424		1,364	197	3,123		308		2,545	270	0
Balance at end of period at Mar. 31, 2014																4,200
Balance at end of period - shares at Mar. 31, 2014			631,417	[1]						66,368	[2]								21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2014		13,628	7		9,433	6,462	(2,274)	2,717		364		1,603	750				2,174		424		1,521	229	3,206		308		2,596	302	0
Balance at beginning of period at Dec. 31, 2014														4,248
Balance at beginning of period - shares at Dec. 31, 2014		665,849	665,849	[1]				66,368		66,368	[2]						21,294		21,294	[3]			37,818		37,818	[4]
Common stock shares issued	[1]		1,864
Common stock issued		54			54
Stock-based compensation		(7)			(7)
Net income (loss)		647				647		87	[5]				87	117	[5]		53	[6]				53	78	[5]				78
Dividends, dividend equivalents and distributions		(249)				(249)
Cash dividends declared on common stock								(44)					(44)				(23)					(23)	(30)					(30)
Distributions to member																(23)
Capital Contributions From Parent								50				50
Other comprehensive income (loss)		(37)					(37)																(1)						(1)
Balance at end of period at Mar. 31, 2015		14,036	7		9,480	6,860	(2,311)	2,810		364		1,653	793				2,204		424		1,521	259	3,253		308		2,596	350	(1)
Balance at end of period at Mar. 31, 2015														$ 4,342
Balance at end of period - shares at Mar. 31, 2015		667,713	667,713	[1]				66,368		66,368	[2]						21,294		21,294	[3]			37,818		37,818	[4]

[1] Shares in thousands. Each share entitles the holder to one vote on any question presented at any shareowners' meeting.

[2] Shares in thousands. All common shares of PPL Electric stock are owned by PPL.

[3] Shares in thousands. All common shares of LG&E stock are owned by LKE.

[4] Shares in thousands. All common shares of KU stock are owned by LKE.

[5] Net income approximates comprehensive income.

[6] Net income equals comprehensive income.